AirHint found the following cheapest one-way flights from New York (JFK) to London (LHR) in December 2025 (see full year).

One-Way flights

01 Dec	Iberia
02 Dec	Iberia
07 Dec	Delta	direct
08 Dec	Delta	direct
30 Dec	Delta	direct
06 Dec	Air France	direct
29 Dec	Air France	direct
12 Dec	Delta	direct
03 Dec	Air France	direct
04 Dec	Air France	direct

Also check the deals for return flights from New York to London in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest one-way flights from New York to London in December from $255

One-Way flights